Energy, risk, and reptilian reproductive effort: a reply to Niewiarowski and Dunham

Journal Publication ResearchOnline@JCU
Shine, R.;Schwarzkopf, L.;Caley, M.J.
Abstract

[Extract] Based on simple mathematical models, Shine and Schwarzkopf (1992; SS) suggested that survival costs of reproduction were likely to be more important evolutionary determinants of reproductive effort (RE) than were growth costs in many reptiles, and hence that energy-based measures were unlikely to be of general use in testing predictions derived from RE theory. These conclusions were strongly challenged by Niewiarowski and Dunham (1994; ND), who argued that our models lacked generality. In this paper, we reexamine ND's analyses and show that their models actually support, rather than refute, our original conclusions.

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Evolution

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50

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1558-5646

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5

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4

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Society for the Study of Evolution

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